نتایج جستجو برای: conservation of soil

تعداد نتایج: 21196506  

2002
Evan Mercer

Soil erosion poses economic and environmental concerns in many tropical uplands. Agroforestry has been proposed as a sustainable land use that can mitigate soil erosion and promote the economic welfare of small farmers. To evaluate such claims, we must (a) develop a composite measure of effectiveness, such as a soil conservation index, and (b) define it in terms understood by the farmers who ul...

2003
John A. Miranowski

It is important to indicate at the outset that I do not intend to argue for more funding for soil conservation programs, but rather for more efficient use of the resources presently committed. Before we can go very far in evaluating the impacts of soil conservation spending changes, we need additional background on soil conservation programs. It is hoped that such information will tell us somet...

ژورنال: آبخیزداری ایران 2019
Gholami, Leila, Haghjoo, Zahra, Kavian, Ataollah, Mosavi, Seyed Ramezan,

Soil erosion, especially water erosion, threatens the installations, water resources and also human life. The first stage of water erosion is the splash erosion that it requires to control in the primary stages. On the other hand, the application of soil conditioners is one of the approaches that it provide the conservation possibility of soil surface against water erosion, especially erosion f...

2008
JILL M. BELSKY

Soil conservation efforts in Indonesia since the Dutch colonial era have focused on introducing bench terraces—a costly soil conservation method for poor, upland farmers. Data from two villages in the Kerinci uplands of Sumatra illustrate that even with state underwriting of bench terrace construction, farmers across all economic strata still resist using this method. Why the state has not purs...

بیات ورکشی, مریم, زارع ابیانه, حمید, قدمی فیروز آبادی, علی, کریمی, ولی ا..,

Quantitation and evaluation of infiltration models are used in soil conservation, irrigation systems, hydrology investigations, watershed and watershed management systems. The purpose of this study was to estimate the infiltration by using statistical and experimental various models in two soils of plowed and without plowed in Haraz Technology and Development center paddy fields of Mazandaran p...

حسینی خدادادی, مهدی, مظفری, محمدمهدی, پرهیزکاری, ابوذر, پرهیزکاری, رویا,

In this study, the influencing factors on farmers' participation in use of soil and water conservation practices were investigated using the farmers' experiences in Shahroud river basin. For achieving this goal was used from multinomial logit model. The required dates are related to year 2011-2012 that by completing the questionnaire from 138 sample farmers were collected. To select the sample ...

2009
Shengping Wang Zhiqiang Zhang Ge Sun Steven G. McNulty Manliang Zhang

Soil conservation practices have been widely implemented on the Loess Plateau to reduce severe soil erosion in north-central China over the past three decades. However, the hydrologic impacts of these practices are not well documented and understood. The objective of this study was to examine how water yield has changed after implementing soil conservation practices that resulted in changes in ...

ژورنال: علوم آب و خاک 2016
امیدوار, ابراهیم, فلاح سورکی, مقدسه, کاویان, عطااله,

Prioritization of sub-watersheds is very important and necessary in order to implement soil and water conservation practices. This study has prioritized 13 sub-watersheds based on morphometric and land use characteristics using RS and GIS techniques in Haraz watershed to identify erosion-prone sub-watersheds. Morphometric characteristics including bifurcation ratio, drainage density, stream fre...

Journal: :اکو هیدرولوژی 0
عبدال شهریور استادیار، مرکز تحقیقات آبخیزداری استان کهگیلویه و بویراحمد صمد شادفر دانشیار، پژوهشکدۀ حفاظت خاک و آبخیزداری مجید خزایی دانشجوی دکتری آبخیزداری، دانشگاه هرمزگان بهزاد عادلی دانشجوی دکتری آبخیزداری، دانشگاه هرمزگان

surface. the development of gullies causes the loss of a great amount of soil and could be considered as one of the principal causes of geo-environmental degradation. in this research fazi model introduced for gully erosion zonation in arid and semiarid area considered to calibration and validation in kahkiloeh and boyerahmad province. therefore, the abgandi watershed were selected by considera...

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